Carrier route record
AATYS→DFW
American Airlines · Knoxville to Dallas-Fort Worth
- Flights
- 1,338
- Period
- September 2025 to August 2026
- Share of route
- 76%
- Carriers
- 4
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with American Airlines.
American on TYS to DFW carries a cancellation problem, not just a delay problem: 3.6% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, close to three flights in four arrive on time, worth a B− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 1,338 flights, with a median arrival 9 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate American on TYS to DFW from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
76.4%
Arrivals under 15 minutes late, of 1,283 completed flights
Avg delay
103 min
Across delayed arrivals only, not all flights
Cancelled
3.59%
National rate is 1.89%
Whole route
77.5%
Every carrier on TYS to DFW, 1,761 flights
These figures cover 1,338 flights between September 2025 and August 2026. Beyond the headline rate, 10.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
American against every carrier on TYS to DFW
American flew 1,338 of the 1,761 flights on TYS to DFW, most of the route. Its 76.4% on time is about level with the route as a whole at 77.5%. Ranked by on-time rate it is last of four carriers on the route, where the range runs from SkyWest at 100.0% to American at 76.4%. Three of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlinesthin sample | 5 | 100.0% | — | 40.00% | A− |
| Envoy Airthin sample | 92 | 87.9% | 56 min | 1.09% | A |
| PSA Airlinesthin sample | 326 | 78.6% | 84 min | 2.15% | B |
| American Airlines (this page) | 1,338 | 76.4% | 103 min | 3.59% | B− |
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Departure window
When American runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 45 points, against half a point between the best and worst carrier.
- 5am–8am365 flights86.8%
- 8am–11am—
- 11am–2pm232 flights84.7%
- 2pm–5pm369 flights77.4%
- 5pm–8pm315 flights63.1%
- 8pm–5am57 flights41.5%
Scale runs 35% to 90%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 41.5% on time, against 86.8% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 2pm–5pm window is the busiest, with 369 flights scheduled in it.
Across the year
American on TYS to DFW through the year
June is the worst month at 61.0% on time, 24 points below February, the best at 84.9%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. March was the busiest month here, with 124 flights.
Across the week, Tuesday is the strongest day at 80.6% on time and Monday the weakest at 70.1%, a spread of 11 points.
Arrival by arrival
How late American on TYS to DFW runs when it is late
American on TYS to DFW often beats the schedule: 506 of 1,283 completed flights, 39%, arrived 15 minutes or more early. The 303 late arrivals split 97 under half an hour, 76 between 30 and 60 minutes, and 130 an hour or more.
- 15+ min early506 flights39.4%
- Within 15 min474 flights36.9%
- 15–29 min late97 flights7.6%
- 30–59 min late76 flights5.9%
- 1–2 hours late62 flights4.8%
- 2+ hours late68 flights5.3%
Scale runs 0% to 100%.
Share of 1,283 completed flights by arrival against schedule.
74 of 330 late departures made up the time and arrived on time, 22% of them. 47 flights left on time and still arrived late.
The worst days
Worst days for American on TYS to DFW
The latest arrival of the period was on 15 February 2026, 20 hours 44 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 February 2026 | 20 hours 44 minutes | Carrier |
| 27 January 2026 | 20 hours 3 minutes | Carrier |
| 28 September 2025 | 18 hours 31 minutes | Carrier |
| 15 March 2026 | 15 hours 58 minutes | Extreme weather |
| 4 June 2026 | 13 hours 33 minutes | Carrier |
Delay causes
Why American runs late on this route
Late-arriving aircraft accounts for 43% of the 31,000 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Late-arriving aircraft
- 37%Carrier
- 10%Extreme weather
- 9%National Airspace System
- 0%Security
43% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 31,000 reported delay minutes here, that single category outweighs weather by 4 to one. The split is drawn from 31,163 reported delay minutes.
The largest share of delay minutes, 37%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 12,000 of the 31,000 delay minutes reported here.
Cancellations run at 3.59%, against 1.89% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and stage length
What a delay here costs
10.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 772 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg is a different operation and performs like one: it runs 69.1% on time across 1,338 flights, 7 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 7 points of difference.
The sample behind these figures is 1,338 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking American on TYS to DFW
Put together: the delay figures matter less here than the 3.59% cancellation rate. A late arrival costs you close to two hours; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 1,283 completed flights over 12 months sit behind that.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.